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Can you get DB username, pw, database name in Rails?
I'm writing a rake task that does some DB work outside of Rails/ActiveRecord.
5 Answers
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How to split a column into two columns?
...tolist method will return this value as is (NaN) which will result in ValueError (to overcome this issue you can cast it to string type before splitting). I recommend you to try it on your own it's the best way of learning :-)
– Nerxis
Dec 18 '19 at 8:07
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What are C++ functors and their uses?
...;void>(), _1, e));
There is one problem with all this stuff, compiler error messages is not human readable :)
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Check if something is (not) in a list in Python
I have a list of tuples in Python , and I have a conditional where I want to take the branch ONLY if the tuple is not in the list (if it is in the list, then I don't want to take the if branch)
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Installing SciPy and NumPy using pip
... Installing libblas-dev liblapack-dev resolved blas but then I got error: library dfftpack has Fortran sources but no Fortran compiler found so I needed all these to be able to install scipy. Thank you.
– naoko
Aug 16 '15 at 0:37
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How to display a specific user's commits in svn log?
How to display a specific user's commits in svn? I didn't find any switches for that for svn log.
11 Answers
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How to redirect output to a file and stdout
...gt;&1 | tee outfile
2>&1 redirects channel 2 (stderr/standard error) into channel 1 (stdout/standard output), such that both is written as stdout. It is also directed to the given output file as of the tee command.
Furthermore, if you want to append to the log file, use tee -a as:
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Print number of keys in Redis
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edited Aug 28 '15 at 18:05
answered Mar 27 '12 at 16:44
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Can't stop rails server
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You can use other ports like the following:
rails server -p 3001
Normally in your terminal y...
Peak signal detection in realtime timeseries data
...eshold that makes the algorithm signal when you want it to (some trial-and-error might be needed here to get to a good threshold for your purpose).
WARNING: The code above always loops over all datapoints everytime it runs. When implementing this code, make sure to split the calculation of the sign...